From: Kees Cook <keescook@chromium.org>
To: Nick Desaulniers <ndesaulniers@google.com>
Cc: Nathan Chancellor <nathan@kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"tglx@linutronix.de" <tglx@linutronix.de>,
Tor Vic <torvic9@mailbox.org>,
"mingo@redhat.com" <mingo@redhat.com>,
"x86@kernel.org" <x86@kernel.org>,
"clang-built-linux@googlegroups.com"
<clang-built-linux@googlegroups.com>
Subject: Re: [PATCH v2 1/1] x86/Makefile: make -stack-alignment conditional on LLD < 13.0.0
Date: Thu, 10 Jun 2021 16:47:07 -0700 [thread overview]
Message-ID: <202106101601.248F797@keescook> (raw)
In-Reply-To: <CAKwvOdmYVH-YpEVqdoBfvgNfcbzx71jU_27cuhuzTJ6_Emzi-g@mail.gmail.com>
On Thu, Jun 10, 2021 at 03:58:57PM -0700, Nick Desaulniers wrote:
> On Thu, Jun 10, 2021 at 3:50 PM Kees Cook <keescook@chromium.org> wrote:
> >
> > On Thu, 10 Jun 2021 20:58:06 +0000, Tor Vic wrote:
> > > Since LLVM commit 3787ee4, the '-stack-alignment' flag has been dropped
> > > [1], leading to the following error message when building a LTO kernel
> > > with Clang-13 and LLD-13:
> > >
> > > ld.lld: error: -plugin-opt=-: ld.lld: Unknown command line argument
> > > '-stack-alignment=8'. Try 'ld.lld --help'
> > > ld.lld: Did you mean '--stackrealign=8'?
> > >
> > > [...]
> >
> > Applied to for-next/clang/features, thanks!
> >
> > [1/1] x86/Makefile: make -stack-alignment conditional on LLD < 13.0.0
> > https://git.kernel.org/kees/c/e6c00f0b33ad
>
> Can we get this into 5.13?
What's the ETA on LLVM 13.0? I was going to put this in -next, marked
for stable, but we're about 3 weeks from 5.14 merge window.
--
Kees Cook
next prev parent reply other threads:[~2021-06-10 23:48 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-10 20:58 [PATCH v2 1/1] x86/Makefile: make -stack-alignment conditional on LLD < 13.0.0 Tor Vic
2021-06-10 21:07 ` Nathan Chancellor
2021-06-10 22:49 ` Kees Cook
2021-06-10 22:58 ` Nick Desaulniers
2021-06-10 23:47 ` Kees Cook [this message]
2021-06-10 23:58 ` Nick Desaulniers
2021-06-11 18:23 ` Kees Cook
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